摘要
针对某600 MW机组在启动过程中的过激磁保护误动跳闸事故,根据保护装置故障记录和波形,分析纵向零序过压元件、三次谐波定子接地保护、过激磁保护动作情况,查找出故障原因。通过对保护的动作行为分析,提出了几点改进建议。
To deal with the tripping accident of the over-excitation protection during the startup of a 600 MW unit, this paper analyzes the actions of the longitudinal zero-sequence overvohage element, third harmonic stator grounding protection and over-excitation protection according to the fault record and waveform of the protection device to identify the fault causes. Some proposals on improvement are presented through the anal- ysis on the protection actions.
出处
《浙江电力》
2012年第3期50-52,共3页
Zhejiang Electric Power
关键词
发电机
零序过压
三次谐波
过激磁保护
分析
generator
zero-sequence overvoltage
third harmonic
over-excitation protection
analysis
